A series of stable phosphonium salts have been synthesized via a novel four‐component reaction of an arene nucleophile, 2‐heteroatom substituted aryl aldehyde, and phosphine in presence of an acid. The phosphonium salts thus obtained were utilized for the synthesis of a variety of bis‐heteroarenes, providing an efficient alternative method to the classical cross‐coupling strategies.

中文翻译：

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Component盐的四组分合成：交叉偶联合成双杂芳烃的另一种方法的应用

通过芳烃亲核体，2-杂原子取代的芳基醛和膦在酸存在下的新型四组分反应合成了一系列稳定的salts盐。由此获得的salts盐可用于合成多种双杂芳烃，为经典的交叉偶联策略提供了一种有效的替代方法。